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Changes in vestibular symptoms and function after cochlear implantation: Relevant factors and correlations with residual hearing

Authors
Jang, JH  | Kim, H  | Choo, OS | Park, HY  | Choung, YH
Citation
Clinical and experimental otorhinolaryngology, 14(1). : 69-75, 2021
Journal Title
Clinical and experimental otorhinolaryngology
ISSN
1976-87102005-0720
Abstract
Objectives. The aim of this study was to evaluate vestibular function loss after cochlear implantation (CI) and the relationship between vestibular function and hearing changes. Methods. Seventy-five patients with CI were enrolled and divided into those with normal preoperative caloric function (group I) and those with a normal preoperative waveform in cervical vestibular evoked myogenic potential (c-VEMP) testing (group II). The relationship between hearing and changes in the vestibular system was analyzed preoperatively and at 3 and 6 months postoperatively. Results. In group I, unilateral weakness on the implanted side was detected in five (7.7%) and eight (12.3%) patients at 3 and 6 months post-CI, respectively. By 3 months post-CI, the total slow-phase velocity (SPV; warm and cold stimula-tions) was significantly different between the implanted and non-implanted sides (P=0.011), and the shift in total SPV from pre-to post-CI was significantly correlated with the average hearing threshold at 6 months post-CI. In group II, an abnormal c-VEMP was detected on the implanted side in six patients (16.2%) at 3 months post-CI, and in six patients (16.2%) at 6 months post-CI. Significant changes were noticed in the P1 and N1 amplitude at 3 months post-CI (P=0.027 and P=0.019, respectively). Conclusion. Vestibular function and residual hearing function should be afforded equal and simultaneous consideration in terms of preservation.
Keywords

DOI
10.21053/ceo.2019.01851
PMID
32526819
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Otolaryngology
Ajou Authors
김, 한태  |  박, 헌이  |  장, 정훈  |  정, 연훈
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